"Mornin', kids," Kūkaku said at the start of class, nodding to a large box on one of the lab tables. "Help yerselves to some cupcakes....
if ya trust 'em. Let's just say, I was inspired by last week."
Whether or not she was inspired in a good way or a bad, though, she wasn't saying. (The students would be glad to know that there were no explosive surprises hidden in the buttercream).
"An' it'll give ya something to do while I talk about
acids and
bases."
Because, of course, this required a good sized
lecture on how people had to actually
discover a simple concept like acids and bases, with all the diagrams and chemical equations and everything quickly filling up the whiteboard.
"Technically," Kūkaku allowed, "I probably shoulda talked about this stuff a while ago, but acid and base reactions tend to be...subtle. I ain't so good with subtle. And this," she put down the marker so she could hold up a few pieces of paper, "is
litmus. The way litmus works is probably more interestin' than what it actually does: it's a water-soluble mixture dyes extracted from lichens that will react,
chemically, to tell us whether a substance is acidic or alkaline. So guess what we're doin' today. Figuring it out.
"Find a partner and a lab table, where you'll find some substances and some litmus papers. Your activity today is going to try to identify the substance first, figure out if you think it's an acid or a base, and then use the litmus paper to find out if you were right or wrong. If it turns red, it's an acid. If it's blue, it's a base. The darkness of the colour can show
how acidic or alkaline it is. And if ya wanna be really nerdy about it," which she was pretty sure most of the class would want to be, "go ahead and figure out exactly what it is. By any means you know how except
tasting the damn things. I don't wanna have to cart any of over to the clinic for bein' complete idiots."
"Any questions? If not, I'll let ya get to work."
[[ OCD is on the way has turned blue ! ]]